Mirabel Dwight in Shining Armor : Season 3 Episode 4

Gretta refuses to attend the Woodside High Sweetheart's Dance for fear of it being ruined like her coming-of-age ball. Meanwhile, Baldric dives headfirst into party planning with the students of Woodside. But on the eve of the dance, an angry ghost with a grudge against Gretta makes its presence known.